Hydraulic Disc Brakes,dis brakes,MTB disc brakes,Trial bike disc brakes


XC & Trial Bike

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Lewis LV4 Radial Cylinder 4 Pistons Hydraulic Disc Brake

The most powerful brake system, designed for demanding braking use(E-MTB, Downhill and Enduro).

LV4 set only 380g without Oil Hose, Front(hose 90cm)+Rear(hose 160cm)=597g included Oil Hose.

Patented 2 in 1 dual adjustment for lever reach & bite point.

14mm+17mm 4 Stainless steel pistons with Metallic Pads.

Upgraded hinged clamp, no fray bike handlebar.

Easy Bleeding Technology.

Mineral Oil and Kevlar hose.

High-precision CNC machining technology.

Powerful but predictable braking force.  

Ultra light lever action.

Bearing pivots provide superior modulation and feel.

Retail Price: US$339 per set (Front +Rear Brakes), Tax Excluded

Visit our Dealer Page to order Lewis Brakes from your nearest bike shops.


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  • Bite Point & Lever Reach Adjustment
    Bite Point & Lever Reach Adjustment

    Lewis' patented technology for dual adjustment of lever reach & bite point allows you to customize the feel to your preference for superior performance out on the trails.

    Reach(tool free), bite point(with allen key).

  • Dual oil ports design
    Dual oil ports design

    Dual oil ports design, more convenient for oil bleeding.

    Make good use of the oil reservoir capacity to generate the amazing braking force.

  • Better Leverage Ratio
    Better Leverage Ratio

    Optimize the leverage ratio of vertical structural brakes and the motion trajectory of the tripod bar to obtain more direct braking force feedback, which is suitable for use environments such as XC bikes, climber bikes with high requirements for brake feedback.

  • Four precision bearings
    Four precision bearings

    Four precision bearings constitute the pivot point of the lever blade.

    Each movable pivot is composed of precision bearings on both sides providing a stable and smooth action.

  • CNC 7075 T6 Aluminum four-piston caliper
    CNC 7075 T6 Aluminum four-piston caliper

    7075 aluminum alloy allows for better rigidity increasing the overall performance of the brake, while keeping the power stable and predictable.

    Four-piston caliper provides superior braking power for any situation on the trials.

  • 14mm+17mm asymmetric piston design
    14mm+17mm asymmetric piston design

    The 14mm+17mm asymmetric piston design improves the linear feel of the brakes, balances the pressure distribution of the pads and balances wear.

  • Corrosion-resistant Hose
    Corrosion-resistant Hose

    High quality braided hose is suitable for higher-intensity riding environments.

    The LV2 standard version uses 4-layer hoses which have excellent performance benefits such as high pressure resistance, corrosion resistance and high temperature resistance. They also allow a more stable performance under heavy use of the brakes. The internal use of Kevlar bulletproof fiber with a high number of braided layers makes the hose have an expansion coefficient far lower than the industry standard giving the brakes next level rigidity.

  • Hose Material
    Hose Material

    1. PVDF and Teflon

    2. Spiral filament winding

    3. Kevlar bulletproof fiber braided layer

    4. Tensile and corrosion-resistant casing

  • Hose customizeation
    Hose customizeation

    A pair of standard LV4 with left hand rear and right hand front. The length of the the hose is 90cm at the front and 160cm in the rear. If you need to customize the hose length or lever direction please feel free to contact us.

MaterialCNC 7075T6 Aluminum
Body FinishBlack, Silver, Black & Silver, Customized colors
Clamp ColorBlack, Silver
Clamp TypeHinged
ScrewsStainless Steel
MaterialCNC 7075 T6 Aluminum
ColorBlack, Silver, Black & Silver, Customized colors
Brake lever version: 1 Finger
MaterialCNC 7075T6 Aluminum
ColorBlack, Silver, Black & Silver, Customized colors
Piston14+17mm Stainless steel Pistons
ScrewsStainless Steel
Pad typeMetallic 
Hose sizeOutside Diameter 5mm, Bore 2.2mm
Hose lenght90cm front /160 cm rear
Hose finishBlack
INTENDED USEEnduro, Downhill, E-MTB
RotorsNot included, optional (140 mm | 160 mm | 180 mm | 203 mm | 223 mm)
AdapterNot included 

Front + Rear Brake =597g (Oil Hose included)

Cyliner 80g, Caliper 110g

  • Peter-KR

    The bitepoint adjustment is fantastic on the LV4's. With such a wide range available, I tried a variety of lever and bitepoint settings. For now, I've settled on dialing back the bitepoint about a quarter turn from my usual setup. I feel like it gives me a bit more wiggleroom as the brakes are so strong. I think it's a good idea to dial back the bitepoint a bit from what you're expecting upon first use. Once you bed in the pads, these things are going to grab real hard, real quick. You're just a light tap away from a parking lot OTB. On trail, the brakes have been absolutely fantastic, and the added modulation is especially welcome right now with all the leaf coverage on the trails. The power comes on smooth and increases exponentially as you close in on the bitepoint, giving you a nice amount of control until you really need to put the hammer down. I've had a great time regardless of how steep or long the descent. The LV4's stay consistent from start to finish. This is especially appreciated when you're as heavy as I am, ride a heavy e-bike, drag the brakes too much, and pass the five-minute mark on a descent.


    I like the overall size of the LV4 and could see myself running it on a shorter travel trail bike or dirt jumper, but for longer travel I prefer a lever shaped like that on the LH4 and the leverage it provides. It would be cool to have lever options in the future for those who like to mix it up a bit with the lever and master cylinder body. Overall, I can't recommend these brakes enough. The quality and performance for the price are tough to beat. Lewis brakes are definitely worth checking out.